Exhaust ventilator



Sept. 3, 1929. P R. JORDAN 1,726,959

EXHAUST VENTILATOR Filed May '7, 1927 I N VEN TOR:

A TTORN E Y` Patented Sept. 3, 1929.

UNITED STATES PAUL ROE JORDAN, OF NDANAPOLIS, INDIANA.

EXHAUST VENTLATOR,

Application filed. May 7,

This invention relates to a device that is designed to be used externally on buildings in connection with exhaust ducts of vcntilating systems, and has reference more particularly to a stationary ventilator appliance for inducing' out-flow of air from buildings under the influence of air currents passing` over the tops of buildings.

An object of the invention is to provide a simple and inexpensive yet etlicient ventilator appliance which shall. be of such construction as to be adapted to be readily applied to the top of an air-duct, and which shall be adapted to operate without requiring movable parts that might need adjustment or attention resulting from wear or deterioration of parts in use.

Another object is to provide an improved stationary ventilator appliance which shall be of such construction as to be ada ated to cause suction in a high degree through an air-duct regardless of the direction of movement of atmospheric air currents.

A further obj ect is to provide an improved exhaust ventilator appliance which shall be adapted to be rapidly manufactured at low cost and be adapted to be conveniently shipped, and which shall be noiseless in operation and be durable and economical in use.

With the above-mentioned and other objects in view, the invention consists in an exhaust ventilator appliance having novel air-exhausting devices, and further consisting in the novel parts and in the combinations and arrangements of parts as hereinafter particularly described and further set forth in the accompanying claims.

Referring to the accompanying drawings,-Figure 1 is an elevation of the ventilator appliance as preferably constructed; Fig. 2 is a vertical central section of the appliance; and Fig. 3 is a bottom plan of the appliance.

Similar reference characters in the various figures of the drawings indicate corresponding elements or features of construction herein referred to in detail.

Ventilating systems with which the improved ventilator appliance is well adapted to be connected include air-ducts that commonly are extended upward through the rooi-l from the interior of a building, the upper or terminal portion 1 of such an air-duct being shown in the drawings, as a square tube for purposes of illustration rather than arbitrary structure.

1927. Serial No. 189,669.

The improved ventilator appliance has a suitable neck 2 preferably having a slightly flared lower end 3 adapting it to be readily applied snugly to the top of an air-duct. lwo arms 4 and 4 are secured to opposite portions respectively of the neck and similar arms 5 and 5 are secured to other opposite portions respectively of the neck. The appliance has a hollow head part which comprises two vertical plates 6 and 6 oppositely disposed and secured to the arms 4 and 4 respectively, and similar plates 7 and 7 oppositely disposed and connected to the other plates and secured to the arms 5 and 5 respcctively, the head part being considerably larger diametrically than the neck and extending downwards a suitable distance beyond the plane of the top of the neck. Two of the side plates of the head have arms S and 8 secured thereto, the other side plates having similar arms 9 and 9 secured thereto, and a suitable roof 10 is secured to the arms, the roof preferably being pyramidal and sufficiently broad to shed rain water from the neck and air-duct, the distance from the roof from the top of the neck being suflicient to 1- permit freev flow of air from the neck upwardly and past the roof. The lower edge of one of each two opposite side plates of the head has an inclined deflector plate 11 thereon and the other of the two has an oppositely inclined plate 11 thereon, the plates extending outwardly, and preferably inwardly-extending inclined deiiector plates 12 and 12 are connected with the outwardlyextending plates, to prevent atmospheric air lcurrents from driving rain-water over the top of the neck 2.

The top of the hollow head is provided with means to induce out-iow of air from the neck and air-ducts, two of the opposite sides of the head having inclined inwardly extending deiector plates 13 and 13 respectively, the other two opposite side plates having oppositely inclined deflector plates 14 and 14 thereon respectively, the deflector plates being connected together, so that an air current passing to the inclined deflector plate is directed upwardly as it passes over the top of the head with a tendency to cause suction and draw air up from the air-duct. Preferably the tops of the top deflector plates are provided with auxiliary detlectors or siphon devices 15 and 15 on two of the opposite deflector plates and similar devices 16 and 16 on the other two opposite plates.

Each siphony device is composed of a bent plate secured at its ends to the delector plate, as 13, so that the body of the plate 15 stands ottl from the plate 13 and being inA clined assists in defiecting air currents upwardly and also tends to cause suction upwardly beneath the siphon device.

ln practical use, the air currents of the atmosphere may move in various directions, for instance towards the side 7, the plate 11 directing some of the air upwardly with a tendency to increase the air pressure against the side plate 7, the air inevitably rising and passing over the plate 14C and upwardly across the top of the head, the device 16 augmenting the eifectiveness of the plate 14, the ultimate result being exhausting currents upward through the deflectors. During rain storms the rain water is deii'ected by the skirting plates 11, and when the rain water is violently driven so that the water may at times be whirled upwardly, the water is deflected by the plates 12 so as to be directed downwardly towards the air-duct 1. Rain water falling upon the roof 10 is directed outwardl-y so as to fall through the lower portion of the hollow head outside the neck thereof.

What is claimed is:

1. An exhaust ventilator comprising a hollow neck having a flared lower end, the upper portion of the neck being provided with a plurality of outward-extending and also inwardly-extending arms, a hollow head stationarily secured to the outward-extend ing arms and extending- `downward below being open above said roof and the sides of' the head having inclined deflector portions thereon extending inwardly above the edge portions of the roof.

2. ln an exhaust ventilator, the combination of a hollow neck, a hollow head mounted on the neck and having four side plates provided each with an inwardly-extending inclined top deflect-ing plate, the top of each deflecting plate being provided with a siphon device comprising a bent plate secured at its ends to the deecting plate, and a roof securely supported in the hollow head above the hollow neck.

3. ln an exhaust ventilator, the combination oit a hollow neck, a hollow head mounted on the neck and having side portions provided each with an outwardly-extending inclined delector plate on its lower end and also an inwardly-extending inclined top deflcctor plate on its upper end, said outwardly-extending deflector plates having each an inwardly-extending inclined deflector plate thereon spaced apart from said neck, and root securely supported in the hollow head above said neck.

ln testimony whereof, I aiiix my signature on the 4th day of May, 1927.

PAUL ROE JORDAN. 

